11111110110091 has 16 divisors (see below), whose sum is σ = 11868269048064. Its totient is φ = 10376974881504.

The previous prime is 11111110110071. The next prime is 11111110110127. The reversal of 11111110110091 is 19001101111111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11111110110091 - 2⁹ = 11111110109579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111110110071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 549180 + ... + 4745926.

It is an arithmetic number, because the mean of its divisors is an integer number (741766815504).

Almost surely, 2^{11111110110091} is an apocalyptic number.

11111110110091 is a deficient number, since it is larger than the sum of its proper divisors (757158937973).

11111110110091 is a wasteful number, since it uses less digits than its factorization.

11111110110091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4199490.

The product of its (nonzero) digits is 9, while the sum is 19.

The spelling of 11111110110091 in words is "eleven trillion, one hundred eleven billion, one hundred ten million, one hundred ten thousand, ninety-one".